Initially, the cross platform party feature was said to be implemented in the summer update, but it seems like Rocket League fans will have to wait a bit as Psyonix have revamped their roadmap a bit.
According to the blog on their website, Psyonix is still “putting the finishing touches on RocketID — better known as Cross-Platform Parties — by making sure that it lives up to their standards”. With that in mind, they decided to postpone the crossparty update to September.
The August Update on the other hand, will include a big change to progression, which will completely change the player levels in the game, and how players acquire them. Debuting along with the progression change will be the Rocket pass. The Rocket Pass and its “Premium” upgrade features a ton of fantastic content for you to collect — you can learn more about it in “Closer Look from June”.
Finally, Psyonix promised loads of content in the coming weeks, with the Competitive Season 8 beginning this fall, along with moving all Sports Playlists, like Rumble, Dropshot, etc. into their own Ranked tab, and some more additional announcements in the coming weeks which will includE some exciting social features that “will be a big hit” according to Psyonix.